Core-block-assembling machine



Mayl, 1928 N. PAINE CORE BLOCK ASSEMBLING MACHINE Filed Sept. l5. 1927 6 Sheets-Sheet l ATTORNEYS. A

May 1, 1928.

N. PAINE CORE BLOCK ASSEMBLING MACHINE Filed Sept. 15. 1927 6 Sheets-Sheet 2 VITNEISSES l BY MQ TTORNEYS.

N. PAINE CORE BLOCK ASSEMBLING MACHINE May 1,1928. 1,667,903

qd Sent. 15. 6 Sheets-Sheet 5 VTR MM, M

i e l la ATTORNEY.

May" 1, 1928. 1,667,903

N. PAINE CORE BLOCK ASSEMBLING MACHINE Filed Se t. 15, 1927 6`SheetS-Sheet 4 IWTOR. @mim om BUE@ I ATTORNEY. 4

May l, 1928.

N. PAINE CORE BLOCK ASSEMBLING MACHINE e sheds-sheet 5 Filed Sept. 15, 192'? INTOR. BY

l ,'4 n. l. e

ATTORNEY.

WITNESSES Patented May 1, 1928.

UNITED STATES PATENT orrieE.

NATHAN PAINE, OF MIAMI BEAC, FLOR-EDA., ASSIGNOR T MIRACLE DOOR COMPANY 0F DELAWARE, OF OSHKOSH, WISCONSIN, A CORPORATION OF DELAWARE.

CORE-BLOCK-ASSEMBLING MACHINE.

Application led September 15, 1927. Serial No. 219,768.

manufacture of doors and other Woodwork.

Another object of the invention isv the provision ot' a machine of this character including a plurality of clamping trays cyclically movable to successive filling positions.

A further object is to provide a machine of this character in which the core blocks or work pieces are fed to the clamping tray in more than one row to facilitate gluing and preliminary clamping operations and to accelerate the tray-filling operation.

A further object of the invention is to provide a core block assembling machine including a tray cooperating with cam-operated cutting-ottl and displacing means open ating on successive rows of work pieces.

A further object' of the invention is to provide a machine of this char eter including clamping .means acting on the work pieces proiecting from the tray to facilitate the cutting-oii` or trimming operation.

A further object of the invention is to provide automatic means for locking the tray while the work pieces are under pressure, and a more specific object to utiliae the clamping pressure for operating the locking means.

The invention further consists in the several features hereinafter set forth and more particularly defined by the annexed claims.

In the accompanying drawings,

Fig. l, 2 and 3 are plan views of successive portions of a. core block assembling` machine embodying the invention;

liig. l is a vside elevation of the tray rarrier of the machine;

Fig. 5 is a transverse sectional elevation of the machine talien along the line :Ti-5 of Fig. 3;

Fig. 6 is a sectional elevation taken along the line 6-t3 of Fig. 3;

Fig. 7 is a sectional el vvation taken along the line 7-7 of Fig. 3;

Fig. 8 is a fragmentary sectional eleva- .OII lltll .along the line 8#8 of Fig. 3;-

Fig. 9 is a fragmentary sectional elevation taken along the line 9*-9 of Fig. 3;

Fig. l0 is a fragmentary sectional elevation taken on the line lO-plO of Fig. l;

Fig. ll is a fragmentary sectional olevation talren along the line illll of Fig. l;

Fig. l is a fragmentary sectional elevation taken along the line 12-12 of Fig. l;

Fig. 13 is a fragmentary elevation of that portion of the machine shown in Fig. 2, and Y Fig. 14 is a sectional elevation taken along the line lei-lit of Fig. 2. K

In these drawings the numeral designates an elongated table conveniently formed of structural steel and having in its upper surface a pair of parallel shallow channels 2l in `which are disposed tl e upper iights of conveyerbelts 22 and 23 movable in the direction indicated by arrows, each belt being mounted on idle pulleys 2li at the end of the table and on driving` pulleys 25 at an intermediate portion of the table. Spaced parallel feeder tables 2G and 27 extend at right angles to the table 20 near its outer end and carry thereon the upper flights of belts 2S and 29, respectively, for conveying core blocks or work pieces 150 to the table 20, these belts being mounted at their outer ends on pulleys and at their inner ends on pulleys 3l, which latter are disposed below the table 20. The feeder belts 29 are provided to carry workpieces to the convcyer belt 23, while the feeder belts 28 carry work pieces to the conveyer belt 22, and forv this purpose the feeder table 26 which supports the belts 28 is provided at its inner end with a sheet metal extension 32.. which passes` over the conveyor belt '23 supplied from the other feeder table 2T. The pulleys 3l. supporting and driving the inner ends of the feeder belts 28 and 29 are rotated by i shaft '33, which is driven as hereinai'ter described to move the upper .flights of the belts 28 and 29 in the direction indicated by arrows.

A guide angle Sli is secured to the top of each feeder table 26 and 27 at one side of the .l'eeder belts and a pair of spaced parallel guide angles are mounted back to back on the table 2O above each conveyer belt 22 and to form a `workpiece guiding channel lit above each of these belts. One of' each pair ot the guide angles 35 above each conveyer belt 2Q and Q3 iS longer than ite1 companion angle to form an abutment or stop for work piece` leavingr the corresponding feeder table, and each of these stop-forming guide angles' 35 is laterally adjustable to permit adjnfstment, in the width of the guide channel above the conveyer belt. Above the conveyer belts :ZZ and :23 al. the inne: ends ot their t'eedcr tables are placed rotary kicker wheels 2th, each inchulingI spring-prer-ised peripheral plungrors 2li'. which serve to propel the work pieces coming troni the, feeder tables into the guide channels above the conveyer belts` :22 and 23, thereby keepin;r there channels lilled with work pieces in en'dwise abutment. The kicker wheels Bti are mounted on respective .sha lts H carrying' sprockets itil count-ted by a chain l) which is driven as lun'eina l'ter described.

The guide channels formed by the angles l above the conveyer belts 22 and Q3 communicate at their discharge ends with a gluinet platform ell. where the moviner work pieces engage the beveled periphery of glue rolls or wheels l2 dipping into a glue regervoir J5. the work pieces being laterally pressed against the glue rolls by spring-urged rollers lll. rlhe flue rolls are mounted on respective shatts t5 disposed on an inclined axis and having a gearing connection with a driving' sha'l'ti t3 by which the glue rolls are rotated in the direction indicated by arrows. The shai'ti -lt is provided with a .sprocket l?. which is chain driven as hereinafter described.

The work pieces. after passing the glue rolls. enter guide channels formed by pairs ot' .spaced angles 1S back to back. one ot each pair beine' adjustable to permit. ot variation in channel width. One ot each pair ot the angles le; ari-ies guard angles 4S which project above the channels to prevent buckling; ol the rows ot' work pieces therein nnder the entlwise pressure to which the work pieces are subjected.

The channels formed by the angles 4S converge to a common channel or passage all), into which the two rows ot work pieces enter side by side. lhis passage ,45) may 'be sutliciently narrow to place theI two rows ol work pieces in lateral abutment and thereby ell'ect their adhefsion. One side` ot the ruido channel l0 is formed by an angularly adjustable angle 50 and the other side is Vformed in part by a pivotally mounted clamp 5l which latter is periodically actuated by lam mechanism hereinafter described to ett'ectthe clamping olf the work pieces within the channel 49.

yl`he discharge end ot the channel or passage t9 registers with the open eide of one ot: a series ot assembling trays .32 to load there on successive double rows of work pieces.

in the present inetanco each t 'ay comprises a tlat metal plate 525 rte-enforced on its under side and carrying on its upper face, at the side opposite and distant from the clannn'ngy channel 4f). an alnitment strip or stop 5l which limits the forward movement ot' the rows ot work pieces' as they are ted onto the tray and places the ends of these rows in alignment. ln orde;- to vary the ,size ot the core to be assembled on the tray :32 the abutment strip 5l is mounted lor lateral adjustmenty by means includingr hand wheel nuts nl ei'urzle'iiig apertured armsv -l" extending laterally from the strip At, the end ot the tray adjacent the discharge, channel 15) and in parallel relation thereto is mounted a pusher bar which is adapted i'or periodic lateral reciproca tion. as herein: lfter deferribed. to laterally move sul cesfiive rows ot work pieces in order to provide room for following rows ol" work pieces directly in line with the discharge end ot the channel if). rlhe pusher bar has secured thereto.depending studs at), fach ot which projects through a slotl :T in the tray plate 53. as Seen in Fig. 9, and each being secured to one end of a tube which has its other end elidably mounted in an openin;r 5t) formed in a resentoreing rib (St) of the plate. 'l'he tube 5S is surrounded by i compressed coiled spring (3l which is intel'- posed between the rib (S0 and the stud 5b and thus urges the stud-bearing pusher bar 5:3 to its rearward position, as shown in Fig. 3, in readiness for a forward dislilacement.

circular saw (32. reciprocattul as hereinafter described. is placed between the tray and the discharge end ot' the channel l-Sl to cut oli' the work pieces at' the edge of the tray a'l'ler ach double row of work piecesl is on the tra. and before the lateral displacement ol' these rows by the pusher har. Spaced parallel tubular bars (3?) extend lengthwise above the tray 52 in spaced relation thereto and each carries leluuulingr studs (l which are sprint' urged dtnvnwardly and which Support at their lower ends a presser strip (lili extending in parallel relation to the superposed bar lill. A l'ollower bar (35 is slidably movable on the plate i in parallel relation to tbe pusher bar 31" to presei've the alignment 'il' the displaced rows of wol'h pieces. rituale bars tl rest on the upper surface of the t'ollower bar (3T3 in :|li;,!'nnn-nt therewith and have bevi-led ends eneageable under the presser ,strip lll by means nl' a spring (3T interposed between the bars and surrounding a connecting and f fuidintr bolt GS. thereby frictionally rctardincr the tollower bar. 'l'he uplstandine portions ol' the anglef bars (ill .servi as hand holds lo release die follower bar and therelrv permit its free movement. At the end portion ot the tray 52 adja centy the pusher bar are placed pivotally till illu

llU

lill) vsprocket 911 on the shaft i ,censos mounted arms 69 carrying a guide strip 70 disposed longitudinally adjacent the newly introduced rows of work pieces on the tray to prevent toppling over of these Work pieces. The guide strip is momentarily lifted out of the way by the lateral displacement of the newly introduced rows of work pieces, and an adjusting screw 09 is provided to adapt the guide strip to different `widths and heights of the Work pieces.

At the end of the tray opposite the pusher ba' is mounted a plurality of parallel plungers 71 placed under pressure by surrounding coiled springs 7 2. the free ends of the plungers being adjusted to equal length by nuts 73 in order that the plungers may sin'iultaneously engage the follower bar (lo when it reaches its linal position after the tray is filled with work pieces. Some of the plungers 71 abut against depending levers 74, each of which is connected at its lower end to one end of a link 7 5 having its other end connected to one arm of a bell crank 76 disposed beneath the tray 52 be- ,loW the pusher bar 55. The other arm of bell crank 76 is slotted for operative connection With an upstanding locking pin 77 which'is slidably mounted in the tray 52 for entrance into a bore 78 formed in the pushgr bar. The several bell cranks 70 are carried on a shaft 76 Base pedestals 79 support .an elongated housing 80 which is disposed laterally of the assembling tray 52 adjacent 'the end thereof receiving the pusher bar 55. A drive pulley 8l is keyed to a stud shaft 82 journalled in a projecting terminal portion of the housing and ille shaft 82 carries a pinion 83 which meshes with a. gear 8st. The gear 811 is secured to one end of a shaft 85, which is journalled at several points along the side of the hoiulting 80, the other end of the shaft carrying a. sprocket 86 connected by the transmission chain 87 to another sprocket secured to a shaft 89. The shaft 89 is supported from and extends longitudinally of the table 20. as seen in Figs. 2 and 13, and is provided with a clutch 90 by which it may be coupled at will to a. coaxial shaft 91, the latter carrying a. sprocket 92, which is connected by a transmission chain 93 to a 323, hereinbefore descrilied. driving the feeder belts 28 and 29. 'lhe shaft 91 also carries a bevel gear 95, which meshes with a bevel pinion 90 keyed to a shaft 97. to which is secured the driving pulleys of the conveyer belts 22 and 23 hereinbefore described. The shaft 97 carries' a sprocket 98 connected by a transmission chain 99 to the sprocket A1-7 of the glue roll operating shaft hereinbefore described. A second. sprocket 100 on the shaft 97 is connected by a transmission chain 101 to a sprocket 102 secured to a stub shaft 103. The stub shaft 103 has also secured thereto in. the housing a sprocket 104 which engages the lovrer flight of the transmission chain operating the kicker shafts 38 hereinbefore described. By means of the transmission elements above described power is transmitted to the feeder belts 28 and 29, the kicker shafts 89 and the glue rolls or Wheels 42.

The shaft 85 disposed along the side of the housing 80 has keyed thereto a pinion 105, which meshes with a. superposed gear 100 journalled in a bearing 107,'the hub of the gear having clutch teeth 108 formed therein at opposite ends. A cam shaft 109 having a pilot bearing in the gear 106 is journalled at several points along ythe housing 80 and has a jaw clutch member 110 splined thereon for interengagei'nent with one set of clutch teeth 108 on the gear 10G.

Pusher bar operating cams 111 are keyed to the cani shaft 109 and have the general profile shown in Fig. 8 of the drawings.

Each of the cams 111 `is engageablewith roller tappet lever 112 pivotally mounted in the housing 80, and this tappet lever is in turn engageable withl thehea'ded end of a horizontal plunger 113 slidably mounted in a bushing member 1111 carried in thekside Wall, of the housing 80 adjacent the pusher bar of the assembling tray 52. A coiled spring llsurrounds each plunger 113 With'- 80 "to effect the recession of the plunger. The plungers 113 bear at spaced points against the outer side of the pusher bar 55 on the assembling tray and vserve. to eil'ect the periodic displacement of the pusher bar in the cycle of operation.

Another' cam 116 secured to the `cam shaft 109 has a rolling engagement with one end of a connecting rod 117, which is pivot ally connected at its outer end to the movable clamping member 51 forming in part one wall ofthe passage L19 from which work pieces enter the assembling tray 52.

Fhe cut-oli1 `saw 62 previously noted is mounted on a carriage 118 and is belt driven from an electric motor 119 depending from the carriage. The saw carriage 118 is mounted for horizontal reciprocation onv a bracket 120projecting from the side of the housing 80, and a link 121 is pivotally connected between the carriage and the lower free end of an arm 122 j'iivotally mounted 'at its upper end Within thecasing 80. The

arm 122 is provided with a roller 123, which is engaged by a cam 121 on the cam shaft 109 to effect the periodic reciprocation of the saw carriage 118 through the intermediate linkage. A plate 62 is secured to each tray at the edge thereof adjacent the outer end of the pusher bar 55 to form ya guard for the saw, as seen in Figs. 8 and 6, and another guard plate 62 is carried by the table 20 adjacent the saw. j

In the present instance, the assembling tray is one of a series of trays mounted on the links of an endless chain or belt 12.3. as more particularly seen in Fig. 4s of the drawings and as hereinafter described. A suitable framework 126 is provided, at opposite ends of which are mounted stationary horizontal arbors 127 disposed in parallel relation, one of these arbors being adjacent the housinrr 80 and carryin; r thereon a tubular shaft 120, which has mounted thereon iu axially spaced relation a pair of sprockets 120. The tray conveyor chain includes a plurality of pintles 130 which carry rollers` 131 at opposite ends engageable in the notches of the spaced sprockets 129 and in the notches of similar spaced sprockets 132 mounted in the arbor 12T at the other end of the franicwork. Two spaced rows of links 133 are carried by the pintles 130 and each laterally spaced pair of links is provided with pads on which one of the assembling trays 52 is bolted or otherwise firmly secured. The framework 126 includes angle trackways 134, on which the pintle rollers ride to avoid saggingr of, and undue tension on, the chain and to keep the trays out o accidental contact.

A shaft has a pilot bearingT in the gear G on the side thereof opposite the cam shaft .109 and is also journalled in a bearing 13G. A jaw clutch member 137 is splined on the shaft 135 for engagement with the adja cent clutch teeth 108 on the gear 100. The jaw clutch members 110 and 137 on the cam shaft 100 and shaft 135, respectively, are connected by a. forked shifting member 138 for alternative connection with the gear 106, and a hand lever 139 is operatively connected to the shifting member 138 to effect such alternative connection or the release of both ot these shafts from their driving connection. The shaft 135 has keyed thereon a bevel pinion 140, which meshes with a bevel gear 111 carried at one end of a shaft 142, the other end of which carries a pinion 143. The pinion 1-13 meshes with a gear 141 sccured to the tubular shaft. 12S. on. which is mounted the sprockets 12S) receiving the trav conveying chain. By this means the tray conveyinjT chain is moved aty will alternativcly with thc operation olthe trayJillingi mechanism.

A framework 115 partially surrounds the assembling,r tray in its tilliuzgr position and carries a pair of bumpers 11G, against which the end of the tray bears to take the thrust of the tray during the filling and clamping operations. A latch 147 operated from a cable 148 and engages the outer side portion of the tray to lockthe tray in its proper position during the tray-filling operation. A `aide angle 145 is mounted on the frame to lie near and parallel to the outer edge of the tray.

A trip bracket 119 is mounted on the side of the housing 580 imposition to engage one Leevgaoa arm of the bell crank T0 as the tray afrends to its loading,r position. thereby ell`ectinrcT the release of theclamping pressure to which the core was subjected duringT the travel of the tray eonveyer and permitting the withdrawal of the core from the tray.

In operation. pieces of waste wood or core blocks 150 of uniform rectangular cross-section and of varyingr lengths are placed on the travellingr feeder belts 2H and 2!) pas-'sungr over the feeder tables and 27. '.Ihe work pieces 150 are carried by the feeder belts to the entrance of the `guide channels above the couvcyer belts 22 and 23 and adjacent the kicker wheels The speed ott thc feeder belts and 20 is auch as to crowd the work pieces against the .stop angles- 23.3 in order that there will always be an'an'lple supply of work pieces for immediate cntrance into the gruide channels above the conveyer belts and 23. At thisl point the work pieces are carried along these latter conveyor belts and are assisted in their travel thcrealong by the kicker wheels 25T, which place the strean'i of work pieces in the guide channels in close tandem relation. From thc conveyor belts 22 and 23 the work pieces are discharged across the gluing platform 41. where they are laterally pressed by the spring-urged rollers ell into engaejemcnt with the glue-carrying beveled pcriiilicrics:

of the glue rolls or whccls 12, therebjv applying a coat of llue to one side face ol each work piece. `From the gluingr platform the glue-coated work pieces are urged by their followers into the converging guide channels formed by the guidey angles- 4H from which channelsv the work pier-cs` cuter the passage or throat 10. At this point the two now contiguous rows o work pieces may be placed under a slight lateral pressure in order to cause their adhesion and these two rows of work pieces arc then projected in a rapid stream onto thc table 525 of thc assen'iblingr tray 52. 'hen these rows abut against the lstop strip at the opposite side of the tahlc thc progress ot' these rows is stopped and shortlv thercziftcr the cam .110 on thiI cam shaft 10ft. which now placed in operation. acts tlu'oi i; rh the link lliH to move thc clamping! member :3l and thereby firmly clamp the two rows ot wolk pieces in t'lnchannel or throat Al0. hollowing this operation the saw carriage lltw is rcciprocatcd by means of thc cam I2! on the cam shaft 10!) and the circular saw ('2 thereupon cnts oli the endsof the work pieces projecting from the adjacent edge of the tray. rlhe saw carriage is thereupon retracted and the pusher bar is operated by means of the plunger-s 1123 and cams lll to laterallyy displace these rows of work pieces. In their lateral movement these work pieces raise the guide strip (it) under which they pass and the foremost row now laterally engages the follower 65, which keeps the work pieces in alignment. The pusher bar 55 is then retracted by means ot' the springs 61, and the clamping member 51 of the clamping passage 49 is then released to permit another double row of work pieces to be rapidly projected onto the tray table. The above noted sequence ot operations is then repeated and the rows` ot work pieces pass beneath the pressure strips or bars 6st, under which they are frictionally retained. It for any reason it is desirable to stop the operation of the cam shaft 109 during the lilling operation this can be donev by placing the shifting lever 139 in `its neutral position without stopping other rotating sha'lts.

During the tray-filling operation the end thrust on the tray is taken by the bumpers 146 and when the tray is filled the follower bar contiguous with the foremost row of work pieces is urged against the spring plungers 71, displacing these to impose and limit the clamping pressure. As hereinbefore described, some of the spring plungers 71 on their displacement serve to swing the bell cranks 76 through intermediate linkage comprising a connecting rod 75 and a lever 74. The angular displacement ot each bell crank 76 eti'ects the upward projection oi the connected locking pin 77 which enters the locking bore or recess 78 in the pusher bar 55, thereby firmly locking the contents ot the tray in place. The pusher bar operating plungers (32 are then withdrawnby their springs 114 and immediately thereafter the cam shaft 109 is stopped in operation by manipulation ot' the shifting lever 139.

The latch 147is then released by means ot its cable 148 to free the now-lled tray from the frame 145, and the tray conveyer chain 125 is then set in motion by operatively connecting it to the gear 106, this being accomplished by manipulating the shitting lever 139 ina direction to engage the clutch member 13T 'with the clutch teeth 108 on the gear. The tray conveyer is lett in operation just a sutlicient length et time to elevate the n i'\vlilled tray and to place in iilling position the nekt succeeding tray, which is then retained by the latch 14T.

Succeeding trays are tilled with work pieces in a manner similar to that just described, and the work pieces in the filled trays during the travel o'll the trays back to their original position are kept under pressure sufficiently long to pern'iit the glue to set. Just before eachtray again reaches its iilling position an elongated arm of one ot the bell cranks 76 on the tray strikes a trip bracket 149 carried on the housing 80, theren by swinging the bell crank to effect the release oi' the locking pin 77 on the pusher bar 55 and permitting the core to be slid otl'the tray. The finished cores are set aside to dry, after which they are sawed into various widths according to requirements.

It will be understood that the work pieces forming the core maybe of'various lengths, and that the term row of work pieces, as

i applied to the work pieces on the tray, may

What I claim as new and desire to secure by Letters Patent is:

1. In a core block assembling machine, the combination of a tray, means for .feeding successive rows of work pieces onto said tray, and means. for intermittently laterally displacing said rows on the tray to provide room for succeeding rows.

2. In a core block assembling machine, the combination of a tray receiving laterally adjacent glue-coated work pieces, and means tor intermittently laterally displacing said work pieces on the trayto provide room for succeeding work pieces.

In a core block assembling machine, the combination of a-tray, and means :tor simultaneously placing on said tray a plurality of rows oit work pieces.

Ll. In al core block assembling machine, the combination ot' a tray, means tor guiding a row of work piecesonto said tray, and means ifor laterally gluing said work pieces while they are in transit to said tray.

5'. In a core block assembling machine, the combination ot a support having a guide channel along which a row of work pieces are ted, a tray receiving a row of work pieces projected from said channel, a cut-oli' saw movable between said tray and said j channel to sever a work piece connecting` said channel and tray after reception ol a row oi work pieces on said tray, clamping uuans acting on the work piece being seiy ed by said saw, and means i'or laterally displacing a row of work pieces on said tray to permit reception oit a succi-ieding row.

6. In a core block assembling machine. the combination ot' a tray receiving adjacent rows oit gluecoated work pieces, a presser member tor laterally compressing said rows ot work pieces into lateral adhesion to torni a core, and locking means controlled by the clamping pressure tor retaining the core under compression after the `withdrawal oil the presser member.

7. In a core block assembling n'iachine, the combination of a` tray receiving adjacent rows of glue-coated work pieces and having resilient abutments thereon, a pusher member for urging successive laterally adjacent rows ot work pieces towards said resilient abutments, actuating means for reciprocating said pusher member, locking meansiinllo lll-r tereng'ageable between said pusher member and` tray, and meansi operated bythe displacement ot said resilient abutments when the work piece iows are placed under lateral con'ipiessjon by the reaction of said abutment's for eticcting the reti'fntion of said pusher member in conipressing position.

In a core block i assembling' machine, lthe combination ot a tray on which laterally adjacent' rows, ot glue-coated work pieces are placed` resiliently mounted pressing means spaced above said tray tor holding subjaeent work pieces in engagement,with said tray, and displacing' means Yl'or moving` successive rowsl ot work piecesI laterally under said pressing' means.

EL lua core block assembliiipr machine, the combination ol a tray oii which laterally ad jacent rows ot glue-coated work pieces are placed, a support mounted on said tray and spaced thereaboye, a pressing' member interposed between said support and tray in spaced relation to said tray and carried by said support, springs urging Isaid pressing member toward said trav, and displacing' means for movingr successive rows ot work pieces laterally under said pressing member Ytor ell'cct'ing' the iriet'ional retention oi said work pieces.

1U. In al core bloek assen'iblingr machine, the combination of a tray on which laterally adjacent rows of work pieces are placed. in ams for laterally displacing successive rows of work pieces after their placement on said tray, a follower bar against which the foremost row of work pieces is engageable in itslateral displacement, and springurg'ed means tor etliecting the trictional i'etardation of said follower bar.

11. In, a core blockassemblingmachine, the combination ot a tray on which laterallyY adjacent rows of work pieces are placed, means for laterally displacingl successive rows ot work pieces after their placement on said tray, a follower bar against `which the foremost'. row of work pieces is eiigageable. in its lateral displacement, spring-urged means for etlecting the trictional retardation ot said follower bar. and means for manually releasing' the 'friction on said follower bar to permit the tree displacement ot said bar on said tl'ay. y

12. In a coi'e block assemblingr machine, the, combination ot a plurality of movable trays. means for locking;` said trays successively in filling' position, and means tor filling' said trays with work pieces when in tilling position. 1 n

13. In a core block asseniblinj'pr machine, the combination ot an endless carrier. a plurality ot trays mounted oli said carrier, means for filling successive trays lwith contiguousrowsot work pieces, and meansfor lockingy the filled trays to placetlie work pieces under lateral compression.

lkIii a core block assciiibling` machine, the combination ot lan endlesscarrier chain, spaced rotary members onwhicli said chain is suppoited and moved, a plurality of trays i mounted on. said carrier chain andinovable therewith to a lillincr position, means tor filling successive trays with work pieces, and means for clamping each tray at'tcr the tilling` operation. M y

15. In a core block asseml)lingr machine. the combination o'l an endless` carrier, a plu rality ot trays mounted on, said carriei'. means for illinr successive trays with contiguous rows ot' work pieces. means Ii'or lof-king the filled trays to place the work pieces4 under lateral coml'n'ession, and means l'or successively releasing' the cores on said trays` preceding the arrival of each tray to t'illinpr position.

1G. In a core blocky assei'nblinpr machine, the combination ot' a tray. means tor placir'rcr successive rows of work pieces on saidtiny` and cam-operated reeipiiocable pushing; means tor laterally displacingr successive rows ot' work pieces and tor placingl said work pieces under lateral compression when the tray is filled. t Z

17. In. a core block assemblingr n'uichine. the combination of a tray on which successive rows of glue-coated work pieces are placed. a laterally movable pusher bar reciinmrably mounted on said tray for ell'ect'ingr the lateral displacement ot successive rows of work pieces, means i'or periodically ell'ecting the reoiprocation of said pusher bar, said pusher bar having' locking recesses, and lockingr members carried by said tray and engageable into said pusher bar recesses in the foi ward position of said pusher bar to retain the filled tray ot' work pieces in lateral compression. n y v 18. In a core block assembling machine, the combination oi' a tray receiving' successive rows ot' work pieces. reciprocable pushingl means for laterally displacing successive rows ot work pieces to provide space for successive rows, and pivotally mounttiad t(ruht ing,r means havingparts disposed at the side ot the newly introduced row oli work pieces4 remote, Ylrom said pushing means to prtwjent topplincr of said work pieces, said guidingr means being urged upwardly out ot the way during the displacement of said row ot work pieces by said pushing means. A y e 19. In a core block asseinblinzclr machine. the combination of a channel out ol"y which wort pieces are fed in a row, a tray movable into register with said channel to receive work pieces therefrom. and latchiner means for retaining said tray and channel in registering relation. l

Q ().In a core block assembling machii'ie. the combination oi' a carrier having: a plurality of trays mounted(thereon,successively movable to a filling position, means 'for placlao llU

ing laterally contiguous rows of work pieces on said trays when in illing position, means for placing a lilled tray of work pieces under compression in a direction lateral with respect to the movement of the carrier, and abutment means engageable by the tray in its trilling position for relieving said carrier ot lateral stress during the compressingoperation.

2l. In a core block assembling machine, the combination of a conveyer belt, guide means disposed longitudinally of the belt tor confining therein a row ot' work pieces to be transported by said belt, a tray onto which said work pieces are discharged, and propelling means disposed above said belt for urging the work pieces thereon in close tandem relation.

22. In a core block assembling machine, the combination of a conveyer belt, guide means disposed longitudinally of the belt for coni'ining 'therein a row of work pieces to be transported by said belt, a tray onto which said work pieces are discharged, propelling means disposed above said belt for urging the work pieces thereon in close tandem rela tion, and a feeding conveyer extending laterally of said belt for laterally urging worlr pieces onto said belt and under said propelling means.

23. In a core block assembling machine, the combination of a conveyer belt, `guide means disposed longitudinally of the belt tor confining therein a row of work pieces to be transported by said belt, a tray onto which said Work pieces are discharged, and a propelling wheel disposed above said belt and having peripheral projecting portions for urging the work pieces thereon in close tandem relation. n

24. In a core block assembling machine, the combination of a table having a pair ot spaced channels along each of which work pieces are fed in a row, means for laterally glue-coating said work pieces in their passage through said channels, a common channel receiving said two rows of work piecesr in laterally adjacent relation, and a tray receiving said rows of work pieces discharged from said common channel.

25. In a core block assembling machine, the combination of a support having a channel along which a row of work pieces are fed, a rotary member engageable laterally with said work pieces for applying a coat of glue thereto, resilient means for urging said Work pieces laterally against said member, and a tray onto which said glue-coated work pieces are fed.'

26. In a core block assembling machine, the combination ot' a. carrier having a plurality of trays thereonsuccessively movable to iilling position, means i'or intermittently moving said carrier, a channel from which work pieces are intermittently fed in a row onto the tray in filling position, cam-operated means or controlling the placement ot successive rows of work` pieces on said tray, and means for controlling said cam-operated means and said carrier-moving means in alternative relation.

In testimony whereof Iaiix my signature.

NATHAN PAINE. 

